Laser-markable fibers or fiber products

D - Textiles – Paper – 01 – F

Patent

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Details

D01F 1/02 (2006.01) D01F 1/04 (2006.01) D01F 1/10 (2006.01)

Patent

CA 2525481

The present invention provides a fiber or fiber product comprising an artificial fiber and filler incorporated therein, the filler being a filler whose own color changes or a filler mixture whose entire color appears to change by irradiation with a laser beam. The filler whose own color changes by irradiation with a laser beam is preferably barium sulfate or diantimony. The filler is usually in the form of particles with a mean particle diameter of not more than about 15 ~m. When the fiber or fiber product of the invention is irradiated with a laser beam, the fiber changes color in the irradiated portion, so that a minute mark can be produced on the individual spun yarns or filament yarns of the fiber or fiber product.

L'invention concerne une fibre ou un produit de fibres comprenant une fibre artificielle et une charge incorporée dans celle-ci, la charge étant une charge dont la couleur change ou un mélange de charge dont l'ensemble des couleurs semble changer lors de l'irradiation par un faisceau laser. La charge dont la couleur change lors de l'irradiation par un faisceau laser est, de préférence, du sulfate de baryum ou du diantimoine. La charge se présente, en général, sous la forme de particules dont le diamètre moyen n'est pas supérieur à environ 15 µm. Quand la fibre ou le produit de fibres selon l'invention est irradié par un faisceau laser, la fibre change de couleur dans la partie irradiée, de manière qu'une minute d'arc puisse être produite sur des filés ou des fils continus individuels de la fibre ou du produit de fibres.

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